private ReadCommandOperation <AggregateResult> CreateOperation(IChannelHandle channel)
{
var command = CreateCommand(channel.ConnectionDescription.ServerVersion);
var serializer = new AggregateResultDeserializer(_resultSerializer);
return(new ReadCommandOperation <AggregateResult>(CollectionNamespace.DatabaseNamespace, command, serializer, MessageEncoderSettings));
}
private ReadCommandOperation <AggregateResult> CreateOperation(IChannel channel, IBinding binding)
{
var databaseNamespace = _collectionNamespace == null ? _databaseNamespace : _collectionNamespace.DatabaseNamespace;
var command = CreateCommand(channel.ConnectionDescription, binding.Session);
var serializer = new AggregateResultDeserializer(_resultSerializer);
return(new ReadCommandOperation <AggregateResult>(databaseNamespace, command, serializer, MessageEncoderSettings));
}
// methods
public async Task <IAsyncCursor <TResult> > ExecuteAsync(IReadBinding binding, CancellationToken cancellationToken)
{
Ensure.IsNotNull(binding, "binding");
EnsureIsReadOnlyPipeline();
using (var channelSource = await binding.GetReadChannelSourceAsync(cancellationToken).ConfigureAwait(false))
{
var command = CreateCommand(channelSource.ServerDescription.Version);
var serializer = new AggregateResultDeserializer(_resultSerializer);
var operation = new ReadCommandOperation <AggregateResult>(CollectionNamespace.DatabaseNamespace, command, serializer, MessageEncoderSettings);
var result = await operation.ExecuteAsync(channelSource, binding.ReadPreference, cancellationToken).ConfigureAwait(false);
return(CreateCursor(channelSource, command, result));
}
}